Rotary brush.



No. 822,757. PATENNNN JUNE 5, wos.

H. NELSON.

ROTARY BRUSH.

APPLICATION FILED .TUNE 17,1904.

'f as. sears?.

Specification of Letters Eatent.

f1." fr, .ta'tentecl June 5, 190.6.

Application .tiled Jima 17,1904. Serial 'No.2l2,97t). A l .f l,

ot the invention being herein eplained and the best niodein which haveeon'temlilated applying that" principle so as to (listing-insti it tromother inventions.

'tions are united into an interloelredstrue- 55 ture. ult will bereadilynoted that this interlocking is caused by the corrugations of thebristles catching and retaining eaeh other and thatthe number ol pointsat which the' bristles thus eatch, and eonseqnentlyfthe 6o force withwhich the bristles .are bound toeether will be de )endent upon thenumber otV undulations in the eontiguous bristles.

The hub consists oi t-Wo outer members l I and B and 'nieanstorbii'iding the sainey to- 65 My invention relates to rotary brushes, its

object ybeing tofproride al brush structure which is readil)Y assembled,ellieient in its operation, durable, and economical in its eoustruetion.

Said invention consists of means hereinafter 'fully described, andparticularly set forth in the claims.

The annexed drawings and the following deseription set forth in detaileertain meehanisln embodying the invention, such disclosed meansconstituting out one oi' various mechanical forms in which theprinciple"`ot the invention ma y be used,

ln said annexed drawings, Figure l represents an el @ration ol one-.haltol' one of the brush-sections. Fig. 2 represents a Vertical axialsection of a complete brush. Fig. 3 represents a partial Vertical axialsection and partial elevation of the hub and separat-ingrings, and Fig.4 represents one of the bristles of the brush.

The brush complete consists, primarily, of the bristle-sections and thehub. Each seetion comprises a circular bristle-base A, conh sisting,preferably, of two twisted strands of wire and a mass ot' doubledundulate interf lockingbristles @,-seeured at their bases between thesaid two strands. The end por-- tions of each bristle are given anundulate formation, shown in Fig. 4, there being provided a great numberot sueh bristles, so that they are erewded in thiekly together andinterloelied with each other, thus bind ing them all into one Compactmass and enabling them to withstand Wear for a lon ver period bydistributing all strains equa ly throughout said sections. The bristlesstand out radially from the bristle-base, as shown in Figs. l and 2, andwhen all the sections are assembled7 as shown in Fig. 2, the corruga-.tions of contiguous seetions will intermesh and support each. other, sothat alll the seegether] Member B eonistsolx cylindrical barrel l),having an outer diameter substantially equal to the inner diameter oftlie'bris tle-bases A, such barrel being provided with an end web Zi anda tlange b2, the inner side of 7c said flange'- being formed with aeireular groove if vnear its junction with the barrel,

shown. 'lhe other-end member is similar in construction to inei'nber B,'exe-e n ing that its barrel b is of a diameter such that it will 75slip inside ba rel l). The means for binding the Whole structuretogether consists oi an elongated nut B4 and an eXternallythreadedsleeve B, such nut and sleeve each provided with a hexagonal head.lntermedlatelv of 8o the ilanges of members B and B are alternatelyvplaced a series of separating-rings B2 and the brush-sections A'. Eachring B2 is formed with an inner 'bead b4, one on each side, and a grooveb5 contiguous to each bead, 8 5 so that each two contiguous rings willformf an annular spaee having an inner enlarged portion and an outercontracted portion. l/Vhen the parts are assembled, t-he bases A. lie inthe enlarged` portions ot said spaces and 9o the bristles projectthrough the contracted portions.l Such construction securely iixes eachbristle-base and leaves all that portion oi eaeh bristle projecting fromthe base free `from extreme pressure or becoming deformed 9 5 throughthe pressure. l have found that said structure materially increases thelife of the bristles, redueing the liability of crystal lizatioiry andconsequent breakage of the bristles neair the hub. 'lhe bristle endsbeing substantially' united, or linked throughout the entire brush,sepa-i ration `thereof does not oceur in the saine degree itv oeeursiii-the ordine-ryv brush during use, the strain due tothe engagementwith x05 the Work operated upon being distributed throughout the Wholestructure instead of being con-lined to a small portion thereof,

l upon the outer parts provided with with flanges ada Having describedmy invention in detail, l that which I particularly point out anddistinctl claim 1st 1.` n a rotary brush, the combination of a pluralityof bristlesections,each com rising a circular base and bristleslattached t ereto separating-rings, one bet .veen each two contiguousbristle-sections, provided with ooves adapted to receive the bases ofsaid ristle-sections and with outer flat portions adapted to bearagainst and support the bristles oli-said sections; and a hub adapted toreceive said bristle-sections and separatingrlings, such hub comprisingtwo members registering one within the1 other, and provided )ted to'bearagainst and secure the 'outer ristle-sections respectively and meansadapted to secure said two members together,

2. A rotarybruslhxfcomprising the combination of a plurality ofbristle-sections; a separating-ring between each two contiguoussections, said rings adapted. to receive an su port the bristle-sectionsand each provided'v with an inner bead; and means for binding saidsections and rings into a unitary structure comprising 'two telescopingbarrels, one of wbich"`s'a1d beads are mounted, each lhaving a flangeadapted to bear against and. support the outer bristlehsectionsrcspectively, and an end web; and a locking member com risingtwo cooperating anges adapted to 'bear upon said end webs, respectively.

3. A rotar brush comprising thel combination of a plurality ofbristle-sections, each section consisting of a bristle-base and bristlesattached thereto; a separating-ring between each two contiguous sectionshaving an inner bead, each two contiguous rmgs l forming an annularspace comprlsmg contracted outer and inner portions and an mtermediateenlarged groove, said rings adapted to receive and support thebristle-bases in said grooves and the bristles in said contracted outerportions; and means for binding said sections and rings into a unitarystructure comprising two telescopingbarrels,upon the outer one of whichsaid beads are mounted, said barrels being provided withl flangesadapted to bear against and support the outer bristle-sections,respectively; and a locking member for telescoping the barrels.

' 4. A rotary brush comprising the combination of' a plurality ol'bristle-sections cach composed of a circular base formed of twistedstrands and doubled bristles secured at their bases betweensaid-strands; separatone between each two contlguous bristle-sections,adapted to secure the bases andto support the bristles of saidbristle-sections; and a hub comprising means for binding said vsectionsand rings together, such means consisting of two barrels one adapted toregister within the other, upon the outer of which said sections aremounted, each such barrel having a against and secure the outerbristle-sections ing-rings,

flange adapted to bear and means adapted to secure said two barrelstogether.

Signed by me this 14th day of June, 1904.

HENRY NIELSON.

Attest:

L. H. KENNEY, J. H. JoNEs.

